<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card>
      <!-- 搜索添加区域 -->
      <el-row :gutter="10">
        <el-col :span="10">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getGoodsList()"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getGoodsList()"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="6">
          <el-button type="primary" @click="goAddPage">添加商品</el-button>
        </el-col>
      </el-row>

      <!-- 商品列表区域 -->
      <el-table :data="goodsList" border stripe>
        <el-table-column type="index" label="#" width="50px"></el-table-column>
        <el-table-column prop="goods_name" label="商品名称"></el-table-column>
        <el-table-column
          prop="goods_price"
          label="商品价格(元)"
          width="100px"
        ></el-table-column>
        <el-table-column
          prop="goods_weight"
          label="商品重量"
          width="100px"
        ></el-table-column>
        <el-table-column label="创建时间" width="160px">
          <template slot-scope="scope">
            <div>{{ scope.row.add_time | formatDate }}</div>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="125px">
          <template slot-scope="scope">
            <!-- 编辑 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
            ></el-button>

            <!-- 删除 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeGoods(scope.row.goods_id)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 4, 10, 15, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  created() {
    this.getGoodsList()
  },
  data() {
    return {
      // 商品列表数据
      goodsList: [],
      // 查询条件
      queryInfo: {
        // 查询参数
        query: '',
        // 当前页码
        pagenum: 1,
        // 每页显示条数
        pagesize: 4
      },
      // 总条数
      total: 0
    }
  },
  methods: {
    // 获取商品列表数据
    async getGoodsList() {
      const { data: res } = await this.$http.get('goods', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      } else {
        this.goodsList = res.data.goods
        this.total = res.data.total
      }
    },

    // 监听每页显示条数
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },

    // 监听当前页码
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },

    // 删除商品
    async removeGoods(id) {
      const confirmResult = await this.$confirm(
        '此操作将永久删除该商品, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch((err) => err)

      if (confirmResult !== 'confirm') {
        this.$message('用户取消了删除操作')
      } else {
        const { data: res } = await this.$http.delete(`goods/${id}`)
        if (res.meta.status !== 200) {
          return this.$message.error(res.meta.msg)
        } else {
          this.$message.success(res.meta.msg)
          this.getGoodsList()
        }
      }
    },

    // 添加商品页面
    goAddPage() {
      this.$router.push('/goods/add')
    }
  }
}
</script>

<style lang="less" scoped>
</style>
